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Ideas for 'On What Grounds What', 'The Logic of Decision' and 'The Philosophy of Logical Atomism'

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6. Mathematics / C. Sources of Mathematics / 1. Mathematical Platonism / a. For mathematical platonism

13741

If 'there are red roses' implies 'there are roses', then 'there are prime numbers' implies 'there are numbers' [Schaffer,J]

6. Mathematics / C. Sources of Mathematics / 9. Fictional Mathematics

6104	Numbers are classes of classes, and hence fictions of fictions [Russell]